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Vishay General Semiconductor - Diodes Division SMBJ8.0CA-E3/51
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- Part No.:
- SMBJ8.0CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0CA-E3/51.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,813
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Product details
Overview
SMBJ8.0CA-E3/51 from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-214AA (SMBJ) package, designed for clamping ESD and surge transients on signal/power lines. It features 600 W peak pulse power (10/1000 μs), 13.6 V maximum clamping voltage at 44.1 A peak pulse current, and 8.0 V stand-off voltage - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line receivers.
For engineers reviewing the SMBJ8.0CA-E3/51 datasheet, SMBJ8.0CA-E3/51 pinout, SMBJ8.0CA-E3/51 application, or SMBJ8.0CA-E3/51 equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with 0.2" × 0.2" copper pad layouts per JEDEC standards.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with breakdown voltage specified at 8.89–9.83 V (tested at 1 mA), enabling robust protection against positive/negative transients without polarity dependency. Its low incremental surge resistance and fast response time (<1 ns) ensure effective suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
The device is rated for junction temperatures from –55 °C to +150 °C and exhibits 100 °C/W typical thermal resistance (junction-to-ambient) when mounted on minimum recommended 5.0 mm × 5.0 mm copper pads. It meets UL 497B recognition (QVGQ2) and complies with RoHS Directive 2011/65/EU.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W (10/1000 μs waveform, 0.01% duty cycle) - sustains high-energy transients without failure |
| Stand-off Voltage (VWM) | 8.0 V - blocks normal operating signals while remaining transparent to system operation |
| Breakdown Voltage (VBR) | 8.89–9.83 V at 1 mA - defines reliable conduction onset under transient stress |
| Clamping Voltage (VC) | 13.6 V at 44.1 A IPPM - limits downstream voltage to safe levels during surge events |
| Leakage Current (ID) | ≤1.0 μA at 8.0 V - ensures negligible standby power loss and signal integrity |
| Operating Temperature | –55 °C to +150 °C - supports under-hood automotive and industrial ambient conditions |
| AEC-Q101 Qualified | Yes - validated for automotive electronic systems requiring reliability certification |
Pinout & Package
Package: DO-214AA (SMBJ), surface-mount, bi-directional configuration with no polarity marking (no cathode band). Matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102; meets JESD 201 Class 1A whisker test (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional transient path | Either terminal serves as input/output for bidirectional clamping - no polarity assignment required |
| Case (body) | Thermal and mechanical interface | DO-214AA molded body provides mechanical stability and thermal dissipation via PCB copper pads |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power rating | Enables single-device protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges on 24 V industrial lines |
| AEC-Q101 qualification | Validates reliability for automotive applications including body control modules and ADAS sensor interfaces |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without pre-baking or special handling |
| Glass passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
| UL 497B recognized (QVGQ2) | Meets safety requirements for telecom and industrial signal line protectors |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between signal line and ground, responding within <1 ns to transients. Use Value: Limits induced voltage to ≤13.6 V during 44.1 A surge, preventing damage to 5 V/3.3 V interface ICs and preserving signal fidelity. |
Use Scenario: Shielding digital and analog I/O channels in programmable logic controllers exposed to relay coil kickback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-mode protector that remains non-conductive below 8.0 V but clamps rapidly above breakdown threshold. Use Value: Maintains ≤1.0 μA leakage at 8.0 V, avoiding false triggering while delivering 600 W transient energy absorption. |
| Telecom Line Receiver Protection | Consumer Device USB/UART ESD Guard |
Use Scenario: Safeguarding RS-485/RS-232 receiver inputs in base station equipment subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Bidirectional shunt element referenced to ground, symmetrically suppressing ± transients on differential pairs. Use Value: Clamps both polarities identically (VBR min/max = 8.89–9.83 V), ensuring balanced protection without skew or offset. |
Use Scenario: Adding secondary-level ESD immunity to USB 2.0 data lines and UART interfaces in smart home hubs and wearables. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed directly at connector entry point. Use Value: Delivers sub-1 ns response and 13.6 V clamping to meet IEC 61000-4-2 ±8 kV contact discharge requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0CAHE3/51 | AEC-Q101 qualified (same); identical electrical specs; HE3 suffix denotes enhanced whisker test (Class 2 vs. Class 1A) | Required where extended whisker reliability is mandated (e.g., high-reliability automotive modules) | Select SMBJ8.0CAHE3/51 only if Class 2 whisker compliance is explicitly required by OEM specification. |
| SMCJ8.0CA-E3/57 | Same VWM/VBR/VC specs but in larger DO-214AB (SMC) package; 1500 W peak pulse power rating | Suitable for higher-energy surge environments (e.g., 48 V industrial power rails) where board space allows | Choose SMCJ8.0CA-E3/57 when system-level surge testing exceeds 600 W or thermal margin is constrained. |
Compared with SMBJ8.0CA-E3/51, SMBJ8.0CAHE3/51 offers identical clamping performance with enhanced mechanical reliability, while SMCJ8.0CA-E3/57 trades compactness for higher surge capacity - selection depends on board area, thermal design, and qualification scope.
Availability
SMBJ8.0CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line receiver circuits requiring stable component supply, AEC-Q101 validation, and RoHS-compliant sourcing.
Supply support for SMBJ8.0CA-E3/51 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The SMBJ series is engineered for surface-mount transient suppression in space-constrained, high-reliability applications - particularly targeting automotive, industrial, and telecom systems needing certified, low-leakage, bi-directional clamping.
FAQ
What is the clamping voltage of SMBJ8.0CA-E3/51 at its rated peak pulse current?
The SMBJ8.0CA-E3/51 has a maximum clamping voltage (VC) of 13.6 V at 44.1 A peak pulse current (IPPM), measured using a 10/1000 μs waveform. This value ensures downstream ICs operating at 5 V or 3.3 V remain within safe voltage margins during surge events. The SMBJ8.0CA-E3/51 maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMBJ8.0CA-E3/51 suitable for automotive applications?
Yes, SMBJ8.0CA-E3/51 is AEC-Q101 qualified and rated for junction temperatures up to +150 °C, making it suitable for under-hood and cabin automotive applications such as sensor interface protection and infotainment system I/O. Its DO-214AA package supports automated placement, and the E3 suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance - all critical for automotive-grade sourcing. The SMBJ8.0CA-E3/51 meets UL 497B recognition for safety-critical signal line protection.
How does SMBJ8.0CA-E3/51 differ from uni-directional SMBJ8.0A-E3/51?
SMBJ8.0CA-E3/51 is bi-directional with symmetrical breakdown (8.89–9.83 V) and no polarity marking, enabling protection against both positive and negative transients on AC or floating lines. In contrast, SMBJ8.0A-E3/51 is uni-directional, featuring a cathode band and forward conduction behavior - it conducts only when reverse-biased beyond VBR. The SMBJ8.0CA-E3/51's bi-directional nature eliminates orientation concerns during placement and simplifies layout for differential or AC-coupled signals.
What is the maximum leakage current of SMBJ8.0CA-E3/51 at its stand-off voltage?
The SMBJ8.0CA-E3/51 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its 8.0 V stand-off voltage (VWM), measured at TA = 25 °C. This ultra-low leakage preserves signal integrity in high-impedance sensor and communication lines, avoids unnecessary power drain in battery-powered systems, and prevents false triggering in precision analog circuits. The SMBJ8.0CA-E3/51 maintains tight leakage control across its full temperature range due to its glass-passivated junction.
Does SMBJ8.0CA-E3/51 require special PCB layout considerations?
Yes - the SMBJ8.0CA-E3/51 must be mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power and thermal performance. Smaller pads reduce heat dissipation and risk thermal runaway during surge events. Trace inductance should be minimized by placing the SMBJ8.0CA-E3/51 as close as possible to the protected port, with short, direct paths to ground. The DO-214AA package supports standard reflow profiles (MSL Level 1, peak 260 °C).
SMBJ8.0CA-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 44.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ8.0CA-E3/51 FAQ
1.How can I place an order for SMBJ8.0CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0CA-E3/51 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ8.0CA-E3/51 reliable?
The price and inventory of SMBJ8.0CA-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ8.0CA-E3/51 is usually 5 days.
3.What payment methods are accepted for SMBJ8.0CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0CA-E3/51?
SMBJ8.0CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0CA-E3/51 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ8.0CA-E3/51?
For technical support, including SMBJ8.0CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0CA-E3/51 requirements.
6.How does Aetrix verify that SMBJ8.0CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0CA-E3/51 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ8.0CA-E3/51 meets industry standards.
7.What is the process for return or replacement of SMBJ8.0CA-E3/51?
All SMBJ8.0CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0CA-E3/51, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ8.0CA-E3/51 part is unused and in its original packaging.
Return procedure for SMBJ8.0CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0CA-E3/51 Tags
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